Effective Mesh Size (vector data)

This function helps to analyse the patch structure the calculate process is, each patch is squared before the sums for each class i are calculated and the sum is standardized by the total landscape area. it is a aggregation metric.

Usage

vm_c_mesh(landscape, class_col)

Arguments

landscape

the input landscape image,

class_col

the name of the class column of the input landscape

Value

the returned calculated values are in column "value", and this function returns also some important information such as level, class number and metric name. Moreover, the "id" column, although it is just NA here at class level. we need it because the output struture of metrics at class level should correspond to patch level one by one, and then it is more convinient to combine metric values at different levels and compare them.

Examples

vm_c_mesh(vector_landscape, "class")
#> # A tibble: 3 × 5
#>   level class id    metric   value
#>   <chr> <chr> <chr> <chr>    <dbl>
#> 1 class 1     NA    mesh   0.00260
#> 2 class 2     NA    mesh   0.01   
#> 3 class 3     NA    mesh   0.0222